* 6.7L Cummins Turbo Diesel I6: This engine produced 650 lb-ft of torque. This was the most common and powerful engine option for the 3500.
* 5.7L Hemi V8: This gasoline engine produced significantly less torque, around 390 lb-ft.
Therefore, you need to know which engine is in the specific 2012 RAM 3500 you are asking about to give you the precise torque figure. The Cummins diesel is far more likely to be found in a 3500 model due to its heavy-duty nature.